Signal analysis: Define the second harmonic relative to the base tone. In frequency-domain terms, a signal’s second harmonic is how many times the signal’s fundamental frequency? Choose the correct description.
Interview
Technology
Difficulty: Easy
Choose an option
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AEqual to the fundamental frequency
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BTwice the fundamental frequency
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CThree times the fundamental frequency
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DHalf the fundamental frequency
Answer
Correct Answer: Twice the fundamental frequency
Explanation
GivenHarmonic relationship to a base (fundamental) frequency f.
Concept/ApproachThe n-th harmonic has frequency n·f. Therefore, the second harmonic = 2f.
Final AnswerTwice the fundamental frequency.